大量自发的和实验诱导的小鼠突变可产生一种毛发的表型 ,常合并毛囊发育过程中的异常。为了弄清这一问题 ,正确识别和分类正常小鼠毛囊形成的主要阶段就显得很重要。作者将Ｈａｒｄｙ早先提出的方法加以改良 ,提出了一种实际的、综合的、易识别的分类标准。首先 ,介绍一种实用? A large number of spontaneous and experimentally induced mouse mutations produce a hair phenotype, often associated with hair follicle development anomalies. In order to clarify this issue, it is important to correctly identify and classify the major stages of normal mouse hair follicles. The author improved Hardy’s previous approach and proposed a practical, comprehensive, easily identifiable taxonomy. First, introduce a practical?